<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script type="text/javascript">
			var array1 = new Array(7);
			console.log(array1.length);//7
			var array2 = new Array(100, "a", true);
			console.log(array2.length);//3
			
			//创建一个空数组
			//数组长度是可变
			var array = new Array();
			array[0] = "232";
			console.log(array);//["232"]
			console.log(array.length);//1
			array[1] = true;
			console.log(array);//["232", true]
			console.log(array.length);//2
			
			//使用push和pop分别对应栈操作的入栈和出栈
			var arr = new Array();
			arr.push("zhangsan");
			console.log(arr);//["zhangsan"]
			arr.push(false)
			console.log(arr);//["zhangsan", false]
			arr.push(45)
			console.log(arr);//["zhangsan", false, 45]
			//console.log(arr[2]);//45
			console.log(arr.pop());//45
			console.log(arr.pop());//false
			console.log(arr.pop());//zhangsan
		</script>
	</head>
	<body>
	</body>
</html>
